1 files changed, 1 insertions, 0 deletions
diff --git a/internal.h b/internal.h
index cc4a263694..d213539b25 100644
--- a/internal.h
+++ b/internal.h
@@ -49,6 +49,7 @@ VALUE rb_ary_cat(VALUE, const VALUE *, long);
 /* bignum.c */
 VALUE rb_big_fdiv(VALUE x, VALUE y);
 VALUE rb_big_uminus(VALUE x);
+VALUE rb_big_float_cmp(VALUE x, VALUE y);
 
 /* class.c */
 VALUE rb_obj_methods(int argc, VALUE *argv, VALUE obj);